IIAE CONFERENCE SYSTEM, The 5th IIAE International Conference on Industrial Application Engineering 2017 (ICIAE2017)

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Preparation of Polystyrene/Polydopamine/Ag/ Polydopamine Microspheres with Multilayer Core-Shell Structure and Its Alignment in Dimethyl Silicone Oil Induced by Electric Field
Zhifeng Wang, Zhikun Chen, Ming Zhang

Last modified: 2017-02-21

Abstract


PSt/PDA (Polystyrene/Polydopamine) microspheres were synthesized by polydopamine coating on PSt microspheres. Ag nanoparticles were then deposited on these microspheres surface. A layer of PDA was coated on the surface of PSt/PDA/Ag to weaken the conductivity of composites microspheres. PSt/PDA/Ag/PDA multilayer microspheres were confirmed by transmission electron microscopy, X-ray photoelectron spectroscopy, and high-resolution transmission electron microscope. These microspheres were dispersed into dimethyl silicone oil under an electric field and the alignment behavior of multilayer microspheres were observed. The results showed that the alignment regularity of microspheres increased with the concentration of microspheres and the strength of the electric field.

Keywords


PSt/Ag composite microspheres; Core-shell structure; Field polarization

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